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CORONA CHARGING DEVICE WITH DIELECTRIC-COATED END SUPPORT BLOCKS

IP.com Disclosure Number: IPCOM000023911D
Original Publication Date: 1979-Apr-30
Included in the Prior Art Database: 2004-Apr-01

Publishing Venue

Xerox Disclosure Journal

Abstract

This proposal relates to an improved corona generating device of the type used in the field of xerography and more particularly, relates to improved end support blocks for the support of a corona discharge electrode. In corona charging devices of the type generally used in xerographic reproduction systems, a corona electrode or wire is supported on insulated blocks in such a manner as to prevent the corona wire from vibrating which would cause damage to the wire. In U.S. Patent 3,483,372, the corona wire is stretched between and attached to two blocks of suitable insulating material which are arranged between side walls at opposite ends thereof, and the corona wire is attached to the blocks by screws extending through the walls into the blocks. In U.S. Patent 4,086,650, the corona wire may be supported in conventional fashion at the ends thereof by insulating end blocks mounted within the ends of a shield structure. These end blocks or support blocks are subject to strong electric fields from the corona discharge. This frequently leads to early failure of the end blocks.